
It's not "The Black Donnelley's". It's "The Black Donnelleys" without the apostrophe between y and s. Donnelley's mean that it belongs to a Donnelley. Donnelleys mean there is more than one Donnelley and holy mother in heaven didn't we all learn this back in second grade!? Get it right people! This is basic English and you can see how it's spelled correctly in the show's title!
Kevin: Tommy, me and Jimmy went down there with goodness in our hearts to work
out a deal. But Louie starts threatening me, I mean, what was I
supposed to do?
Tommy: Kevin, everybody knows who did this. You kidnap somebody, they're not supposed to know who you are.
Kevin: Tommy, you think we're stupid? We wore masks.
Tommy: You went down there with goodness in your hearts, but you wore masks?